Using Audacity to record audio
You can certainly use the standard audio operating system recorder or Camtasia Recorder to record a separate audio track, but the tip in this section will save you some time and aggravation.
Tip
It is easy to use the freeware called Audacity to record audio from a microphone. It is available at http://audacity.sourceforge.net/.
Follow the instructions to download, install, and use Audacity. For a program that does not charge users a license fee, it is amazingly well-supported by a dedicated community of users and programmers. I have used the software for years. You can pay a lot more for a PC audio recorder, but you probably won't find a better one. Consider supporting this effort on the Donate tab at the download link.
Audacity tips
To save you some time and help you focus on the important features in Audacity, I have included some best practice tips, as follows:
Plug in your microphone before starting Audacity. It won't be recognized if you plug in after starting...